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Default Is a dimmer and incandescent light efficient?

On Sun, 16 Mar 2008 23:47:07 +0000 someone who may be Derek Geldard
wrote this:-

One that I measured...
A 500W light dimmed to same output as a 40W light was consuming 300W.


Interestingly those usual suspects who claim to be very interested
in figures have not responded to your figures. I think this tells us
all we need to know.


Excellent, personal abuse, do keep it up.


Nice try. However, readers will observe that my comment does not
refer to any individual. Therefore it cannot be personal, unless one
tries to twist it.

However it's been self evident to me since I was seven that a cycle
front lamp (Cycle front lamp eh? Showing my age there) gives much
less than half it's light output when the battery is down to half
voltage.


It does partly depend on the type of cell. However, light output
becomes close to zero long before zero voltage is reached. A cycle
lamp with a "traditional" bulb will put out just a little glow when
the 1.2V rechargeable cells reach around 0.9V. Much the same with
"non-rechargeable" cells.

Next contestant please.


--
David Hansen, Edinburgh
I will *always* explain revoked encryption keys, unless RIP prevents me
http://www.opsi.gov.uk/acts/acts2000/00023--e.htm#54
 
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